Drying machine



DRYING MACHINE.

APPLICATION FILED AuG.|4. |920.

Bamm/ad May 29 319220 u Nj .m Ii.; .siedi fall ,1 nu n v www@ -@105@ .NN

@@nnw.

/NvE/vToR T: 0m as MMS@ W wf unir-an sraras THoLLas HLLsoraND warmen w; sIBsoNl or PHILADELPHIA, rHNNsrIvaNIa, assIeNoRs To THE PHILADELPHIA DRYING MACHINERY coriIrANY, or rHILannLrH-IA, PENNSYLVANIA, A conroRA'rIoN or rENNsYLvANIa.

DRYING MACHINE.

Leraars.;

Specification of Letters Patent.

Application led August 14, 1920. Serial Nol 403,479.

- Sylvania, have -invented certain new and useful Improvements in Drying Machines,

l whereof the following is a specification, reI- erence being had to the accompanying draw-v ings.

@ur invention relates to drying machines, our principal object being to provide for easy and fiexible control'of the flow of air pendently of one another.

by which dryingis eiiected.4 By means of apparatus embodying our `invention in its more complete form, we are able to vary the direction of flow or circulation of the air through the drying space of the machine; its angle or direction of impingement on the material or articles -to be dried; and the quantity of air coming in contact with the material,all, if desired, more or less inde- How these and other advantages can be obtained in connection with our invention will be made apparent by the description hereinafter of the best embodiment at present known to us, while its scope and essentials in its various phases and aspects will be indicatedin our claims. In the drawings, Fig. I is a side view of a drying machine embodying our invention, in mid-section. j Fig. II is a sectional elevation at right angles to Fig. I, taken at a 'plane corresponding to thel line II-II in Fig. I, the uppermost tray shown being also in section.

Referring to the drawings, it will be seen that the drying machine here shown comprises an enclosure 1 with suitable top and side walls, thebottom being formed by the floor on which the machine rests. In this enclosure 1 is a chamber or space for the material to be dried, here shown in the form of a compartment 2 in the lower portion of the enclosure toward the front thereof: i. e., in its lower front corner. Convenient access to the interior of the drying compartment 2 may be had through a door 3 at the front of the enclosure. In the enclosure isv also an auxiliary compartment or passage 4 which extends part way around the drying compartment 2 and serves, in the operation of the machine, as a means of connection and communication between adjacent sides of the drying compartment 2,-the sides thus connected in the present instance bein the top and the rear. g

A flow of air as dry- Patented May 2, 1922.

ing medium through the compartment 2 in contact with the material to be driedvmay be produced by a fan 5 mounted in said passage. 4 adjacent the angle between the aforesald sides of the compartment which are connected through said passage. As

show n, this fan 5 is located in a circular openingv 1n an upright partition or diaphragm 6 extending from the top of the drying compartment 2 to the roof of the enclosure 1, so as to form, in effect, an eX- tension upward of the rear wall of said drying compartment. Thisfan 5 is mounted on a horizontal shaft 7 which extends lengthwise of the enclosure 1, and may be driven in either direction by means of a pulley 8 mounted on its left-handA end out side the rear enclosure wall. It will be seen that the roof of the enclosure 1 over the dryingD compartment 2 has a considerable slope, so as to aid in the direction 'of the air and reduce eddies. By rotation of the fan 5 in either direction, a circulation of air may be produced in the enclosure 1, with flow one way through the drying compartment 2 and return through the auxiliary compartment or 'passage 4. In its How either way through the passage 4, the air may be heated by means of a bank of steam pipes or coils 9 mounted at the rear of the drying compartment 2. penings 10 controlled by slides 11 may be provided for admitting fresh air and discharging moisture-laden or contaminated air.

As shown, provision is made for supporting 4the articles or material to be dried in the compartment 2 in a plurality of substantially horizontal tiers, by means of shelving or trays 12 that rest andslide on angle-lron guides 13 at the sides of the enclosure and,

at the rear of the compartment 2. rIhese trays 12 need not extend the full width of wire netting, to permit passage ot air directly through them as Well as horizontally amongst them.

The direction of flow of the air through the drying compartment 2,--Whether downward into the same at its upper side and out at its left hand side, or vice versa,ma be controlled, as before indicated, by the dlrection ot rotation of the :tan 5. Provision is made forcontrolling and varying the direc tion or angle of entry of the air into the compartment 2 and its direction or angle ot impingement on the articles or materlal to be 'dried by means of deiector shutters or slats 15 pivoted at opposite ends in bars 16 which are secured to the trame-work 17 ot the drying compartment structure; these shutters can also be used as .dampers or valves tor controlling and varying the available passage for the air and the flow thereof. As shown, there is one series 20 ot such delectors 15 at the top of the compartment 2 and another series 21, in which the slats are somewhat wider, at the rear of said compartment. rlhe deflectors of the series 2U can be moved and adjusted in unison by means or a horizontal slide bar 22 to which they are connected by links 23. 'llhis bar extends out through the wall of the enclosure 1 above the door 3 and has a series of notches 24 for engagement with said wall as a means oit securing it and the deflectors controlled thereby in adjusted position. rlhe dedectors or the series 21 may be operated in unison by means of an elongated double crank 25 to which they are all connected by short links 26. The ends 27 of this cranlr 25 are pivotally mounted in lugs 28 secured to the framing 17. This crank 25 may be actuated by means ot a horizontal slide rod 30 pivoted thereto and extending out through the wall of the enclosure 1 at 3l.

llt will readily be seen that with the apparatus described, articles or material in the drying compartment 2 may be acted on by air passing therethrough and coming in contact therewith from either direction, according to the direction of rotation ot the fan 5. 'llhe direction of impingement ot the air on the articles,-Whether from above through the series of 'detlectors 20, or from the rear through the series 21,-may be 'lurther adjusted and varied by adjustment of said series of detlectors 20 and 21. 'llhese adjustments can be made independently, and when one of said series of deiiectors is in use to control the direction ot the impingement of air, the other can be used valve-wise to -vary and control the available passage for the air and the flow thereof.

Having thus described our invention, we claim:

l. A drying machine comprising an enclosure with a compartment therein for the materials to be dried and a passage directly nemer/a connecting adjacent sides of said compartment; means for circulating air in said en closure, with flow one way through said drying compartment and return through said passage; and means in the aforesaid adjacent sides of said drying compartment for Varying and controlling the Jllow of air therethrough and its direction ot impingement on the material therein.

2. A drying machine comprising an enclosure with a compartment therein Jfor the material to be dried, and a passage directly connecting the top of said compartment with a side thereof; means in said compartment for supporting material to be dried in horizontal tiers; means 'for circulating air in said enclosure, with low either way through said compartment and return through said passage; and means in the top and the side of said compartment connected therewith by the aforesaid passage for controlling and varying the direction of the entering air.l

3. A. drying machine comprising an enclosure with a compartment therein tor the material to be dried, and a passage directly connecting the top of said compartment with a side thereof; horizontal shelving in said compartment for supporting material to be dried; means for circulating air in said enclosure, with dow either way through said compartment and return through said passage; and means in the top and the side of said compartment connected therewith byi the aforesaid passage tor controlling and varying the direction of the entering air; and a series oit adjustable horizontal air-directing and controlling shutters across the top of said compartment and at the side connected therewith by the aforesaid passage.

d. A drying machine comprising an enclosure with a compartment therein tor the material to be dried, and a passage directly connecting the top oit said compartment with a side thereof; means in said compartment for supporting material to be dried in horizontal tiers; means in the top and the side of said compartment connected therewith by the aforesaid passage for controlling and varying the direction of the entering air; a series ot adjustable horizontal air-directing and controlling shutters across the top oit said compartment and at the side connected therewith by the aforesaid passage; and a `fan in the aforesaid passage adjacent the angle between the top' and side of said compartment connected thereby for circulating the air through the compartment with return through the passage.

j 5. A. drying machine comprising an enclosure with a compartment in its lower front portion tor the materials to be dried and a passage connecting the top and rear sides or said compartment; means for circuo lating air in said enclosure, with flow one way through said drying compartment and anV itl@

lll5

said passage above the top of said compartment for circulating the air therein, with flow one way through said compartment, and

return How through said passage; and means for varying and controlling the flow of air and its direction of impingement on the material in said drying compartment.

In testimony whereof, We have hereunto signed our names at Philadelphia, Pennsylvania, this 12th of August, 1920.

THOMAS ALLSOP. WALTER W. SIBSON.

Witnesses:

RALPH M. ERWIN, JOSEPH ROBERTS. 

